U.S.–RUSSIAN NUCLEAR COOPERATION AND THE CTBT

Post-Cold War “lab-to-lab” collaborations on unclassified scientific issues between U.S. and Russian nuclear weapons laboratories set the stage for bilateral cooperation in materials control and other nuclear areas. They also became the major element in a cooperative process initiated by a Presidential Decision Directive to ensure Russia's compliance with the Comprehensive Nuclear-Test-Ban Treaty. These collaborations have always been highly favored by leaders of the Russian nuclear weapons complex—the same leaders who oversee Russia's participation in various government-to-government programs. This article reviews these collaborations and examines the possibility that U.S. rebuffs of Russian proposals and the U.S. failure to keep promises of expanded collaboration could contribute to Russia's reluctance in major programs and even lead to a return to nuclear testing by Russia. The author argues that a renewed U.S. commitment to the process should be an immediate goal of the Obama administration and is an essential step in re-engaging Russia to solve the nuclear problems remaining from the Cold War. Steps for doing so are recommended.     

基于DPA的LED非线性部件逆向研究

在军事和商业应用中有很多密码算法是半公开或者不公开的,旨在证明算法保密对密码的安全性提高并没有明显帮助．针对轻型分组密码LED的未知非线性部件S盒,提出了一种基于差分功耗分析的逆向方法,该方法可以利用差分功耗曲线的极性信息来恢复未知算法结构．实验结果表明,在LED的S盒参数未知时,利用功耗采集平台采集算法运行时泄露的旁路功耗信息,可以成功逆向出全部s盒信息,验证了该方法的可行性．     

火炮抽筒故障机理研究

针对某自行反坦克炮射击后,抽筒时出现药筒钢底座底缘与圆柱部断裂现象这一抽筒故障,分析计算该火炮正常抽筒所需的理论抽筒力和半自动开闩机构所能提供的实际抽筒力,由此定量分析该故障的主要原因,并提出火炮实弹射击预防抽筒故障的具体措施,对半自动开闩结构设计与改进、部队装备训练与射击具有一定指导和参考价值．     

潜艇不机动纯方位解算编队目标运动要素方法

针对单艘潜艇纯方位目标定位必须潜艇机动才能使算法收敛的问题,首次采用几何分析法研究了潜艇不机动情况下,解算编队目标运动要素的方法;然后,基于最小二乘法,给出了具体的解算模型,并给定态势,进行实例仿真。证明该算法能够满足潜艇隐蔽对编队目标定位的需要,进一步丰富了潜艇纯方位目标定位方法。     

基于Matlab四杆式液压起落机构运动学与动力学分析

提出了一种可用于加油卷盘升降的四杆式液压起落机构的设计方案。分析了四杆式液压起落机构的工作原理,采用复数向量法建立了运动学和动力学数学模型。利用Matlab软件编制了相应的程序进行实例分析和计算,得到了机构关键点的仿真轨迹和有关构件的角位移、角速度及角加速度曲线。运用理论分析计算和软件仿真,验证了机构设计的合理性和方案的可行性。     

基于漏搜信息的剩余水雷评估模型

在声纳搜索水雷任务中,为提高剩余雷数估计的准确性,加强作战辅助决策能力,针对现有评估模型未考虑漏搜区和重叠区,评估结果误差和离散性较大的问题,提出一种修正发现雷数的方法：对任务区建立网格,根据记录航迹获得的覆盖次数分布情况,从中提取出漏搜信息,并用其修正发现雷数向量。该方法有效解决了评估向量误差大、维数偏低的缺陷,显著提高了合理性。对典型情况的大量仿真试验证明,该方法能大幅度提高评估结果的准确性,降低离散性,并具有更强的适应性。     

带点缺陷的一维亥姆霍兹共振腔声子晶体中缺陷模式

在基于亥姆霍兹共振腔的一维声子晶体中引入点缺陷会在原有局域共振型声禁带内产生缺陷模式。采用传递矩阵法和有限元法分析了缺陷模式随缺陷单元几何尺寸变化关系和声子晶体中声场分布情况。结果表明,随着缺陷单元与完美单元之间耦合程度的增强,缺陷模式从局域共振型禁带中完美单元共振频率处向禁带边缘移动。同时,缺陷模式的存在使得结构中出现了能量局域化的现象。本工作对设计新型声滤波器、能量集中装置具有一定的理论意义。     

An Imperfect Jewel: Military Theory and the Military Profession

This article explores a perennial theme in the literature of strategic studies: the relationship between military theory and the military profession. It begins with a conceptual analysis of this relationship. It then investigates what military theorists themselves have had to say about the utility of their craft. It concludes by assessing the actual influence of military theory on selected individuals and institutions. The individuals are George S. Patton, Jr., and Ulysses S. Grant. The institutions are the United States Army and the United States Air Force in the late twentieth century. The fundamental finding is suggested in the title: military theory can indeed be quite useful in the maturation of military commanders and in the development of martial institutions, but it is not always necessary and by no means perfect. It should thus be studied assiduously but used with caution.     

基于费效分析的地空导弹火力配系优化

为科学评价地空导弹火力配系方案,针对不同的地空导弹火力组成体系,采用费效分析方法,结合地空导弹操作使用,首先给出了地空导弹火力配系费效分析步骤,然后分别对火力配系的费用和效能进行了讨论,并建立了火力配系费效准则和综合费效比模型,最后通过区域反导实例验证了该方法的可行性.     

宿舍文化研究的文献计量分析(1991-2013)

本文以计量学为基础,采取回溯性文献检索方法,以《CNKI中国期刊全文数据库》(1991-2013年3月)为数据源,建立国内宿舍文化文献数据库。通过对527篇关于高校宿舍文化的文献进行年度分布、被引频次、期刊分布、主要发文单位、文献研究主题进行计量分析,以期了解国内关于宿舍文化的研究水平和发展趋势,把握研究重点和热点,旨在为后续相关研究提供参考和借鉴。